Wagon loader and excavator



July 29, 1930, R. Q HAISS. 1,771,753

wAGoN LADER AND ExcAvAT'oR Filed Api-11 29. 1929 Patented YJuly 29,1930

UNITE. srrrs reet@ .GFFICEj RAYMOND C. HAISS, NEW YORK, N. Y., ASSIGNOR T GEORGE HA'ISS MANUFACTUR- ING CO. INC., OF NEW YORK, N. Y., A OORPOR-ATONOF NEW YORK i WAGON Lonnnn ann nxcnvnron Application iled` April 29,

This invention relates to machines of the general type shown and described in my application.` No. 352,196, filed April 3, 1929, Wagon loaders and excavators, and is directed particularly to a modified form of digging and feedingmechanism.

The primary object of the invention is to provide a novel digging and feeding mechanism by which the operation of such a machine-as` that to which this -invention relates may be satisfactorily carried out under ad-` verse conditions, as when, for example, the materialto be handled is of such a nat-ure as to require looseningor breaking up thereof before it can be effectively acted upon by the material-propelling means. i

`To the above end the present invention contemplates the useof a plurality` of rotatable digging elements for loosening or breaking" up firmly packed and Veven frozen material, suchas earth, sand, gravel and the like in combination; with material-propelling means comprising screw-like members and more specically suitably supported screwlike ribbonsifor moving the loosened or bro ken-up material into the path of the conveyor by which such material is picked up and elevated to a truckV or other vehicle adaptedto receive the same.

Other objects andadvantages of the invention will 4become apparent from the following. description, taken in connection with the accompanying drawings, in which-- Figurel is a side elevation of the pick-up end of a wagon loader and excavator embodying this invention; Figure 2 is a plan view of the parts shown in Figure 1; and Figure 3 is an enlarged detail view showing in side elevation one of` a Vplurality of dig ging elements and one of a plurality of supporting arms for the `material-propelling screw-like ribbons. v

Loaders of the type above mentioned in# clude a frame 10, adjustably mounted upon atraction device (not shown) by which the machine may be propelled from place to place and crowded at slow speed toward and into the material to be'loaded, there being a power unit, such as 'an internal combustion engine (not shown) employed'as a drivingl ieee. lseriali No. sessie.

means for the `traction device aswell as 'for the bucket conveyor 11.` This conveyor in- 'cludes aplurality of buckets 12, carried by a pair of chains 13, passingover sprockets of which the lower'sprockets 14 only are shown, these lower sprockets being secured toa shaft 15 intermediate the endsof the shaft, and the shaft 15 being journalled at 16 in theV lower end of the lframe and extending transversely of the machine. "It will be understood that the Y driving `connection between the power unit and the conveyor-chains 13 which -drive the shaftf15,` is suchV that this shaft is rotated in the direction Figurel. y p t y Secured to the portions ofthe shaft `15 which extend from,` each side of the journal of the arrow A in boxes 16, are a pluralityof" sets of digging i elements or picks19 and radially Adisposed arms 2,0,to .the outer ends ofthe latter of which are secured material-propelling means comprising screw-like ribbons hereinafter more particularly described. FromV the drawings, particularly AFigure 3it willbe Vseen that each pick is secured to an arm, and

both are secured to the'i'shaft 15 bymeans of bolts 21 which pass through holes in flanges 22 and 2S extending from'the hubportions 24E and'25 of the picksand arms, respectively.` f

VIn the form of the invention herein shown, there are six picks at each end of the shaft 15, such picksfbeing disposed at an angle of approximately from their respective corresponding arms.

It will be understood, however, that the number of picks may be varied and their angular relation to the respective arms may be changed without departing from' the spiritof thevinvention. Moreover, whilethe picks are shown as being six in. number at each end of theshaft 15, it is of course obvious that changes may be made in this respect also without departing from the invention.V l/Vhen vthe picks are arranged as herein shown,there will be :four positions. of impact to each rotation of the shaft 15. In so far as the picks at one end of the shaft are concerned, there will be'two positions of impact where only one pick is entering the material being acted upon,

where only one pick is entering the materialA and for each of the remaining positions of impact there will be two picks entering the material. In order that the impacts may be evenly distributed, when the number' Vand Y arrangement of picks herein shown are employed, through 360 vofrotation of the shaft 15, corresponding picks are disposed 180 apart. By thus arranging the lpicks at one end of the shaft at 180o with respect to corresponding picks at the other end of the shaft, it follows that for each of the four positions of impact there will be three picks simultaneously entering the material to be loaded, two of such nicks being at oneend of the shaft and the other of such picks Vbeing at the other end of the shaft for two positions of impact and two of such picks being at said other end of the shaft and one of such picks at said one end of the shaft for each of the other two positions of impact. Inasmuch as this arrangement of picks is such that the same number of such picks enter the material being acted upon at each position of impact, it is obvious that a relatively smooth operation of the machine with alesser maximum power demand is made possible. i, Secured to the outerpends of the arms 20 are material-propelling means, herein shown as a pair of oppositely pitched screw-like members or ribbons26 and 27. located at opposite sides of the conveyor. These materialpropelling members are so disposedv with respect to theV digging elements as to act upon the material, kwhich is broken up or loosened by the digging elements as they are advanced or forced through the material, and to move such loosened or broken-up material towards and into the path of the conveyor buckets as the machine progresses along the path of eX- cavation, which is sufficiently wide to accommodate the usual traction mechanism by which the machine is propelled.

Regardless of whether the machine is employed in the handling of loose or compact material, the path of travel of the conveyor buckets is cleared by thebuckets themselves, which, due to the provision of digging teeth, as shown, on the forward edges thereof, can be forcedforwardly and upwardly through the material with comparative ease. The path which is cleared by the buckets provides room to receive the material which is moved inwardly from opposite sides of the conveyor bythe material-propelling means as the machine advances toward and into the material to be loaded or excavated.

Although only one form of the invention is herein shown and particularlydescribed, it will be understood that certain other modiflcations may be employed without departing from the spirit of the invention or the scope of the following claims.

lVhat is claimed is:

l. A' machine of the character described comprising a conveyor having buckets adapted to receive material at the pick-up end of the conveyor and elevate it to the discharge end of the same, a plurality of rotatable digging elements disposed at .oppositesides of said conveyor at the pick-upfend thereof and adapted to impart forwardly and upwardly directed impacts to the material, and rotatable screw-.like members associated with said digging elements, the digging elements being arranged in advance of the corresponding parts of the screw-like members in the planes of rotation of the digging elements, said screw-like members being oppositely pitched for moving the materialacted uponr by the digging elements out of the path thereof and into the path of the conveyor buckets.

2. A machine of the character described comprising a conveyor having buckets adapted to receive material at the pick-up end'of the conveyor and elevate it to the discharge end of the same, a rotatable shaft located at the pick-up end of said conveyor and projecting outwardly beyond opposite sides thereof, a plurality of digging elements carried by said shaft at opposite .ends thereof and adapted to impart forwardly and `upwardly directed impacts to the material, and rotatable screw-like members carried by said shaft and having parts adapted to operate upon material in the planes of rotation'of the digging elements at the rear'of such elements, said screw-like members being oppositely pitched for moving the material acted upon by thediggingelements toward and into the path of the conveyor buckets.

3. A machine of the character described comprising a conveyor having buckets adapted to receive materia-l at the pick-up end of the conveyor and elevate it to the discharge end ofthe same, a rotatable shaft located at the pick-up end of said conveyor and projecting outwardly beyond opposite sides thereof, a plurality of digging elements carried'by said sha-ft` at `opposite ends of the said shaft and adapted to impart forwardly and upwardly directed impacts to the material, a plurality of radially disposed arms carried bysaid shaft at opposite ends thereof, and rotatable screw-like ribbons secured'to 4,the outer ends of said arms and adapted to operate upon material in the planes of'rotation Yof the digging elements and at'the rear of such elements, said screw-like ribbons being oppositely pitched for moving the material acted upon by the'digging elements toward and into the .path of the conveyor buckets.

4. A machine ofthe character described comprising a conveyor having buckets adapted to receive material at the pick-up end of end of the same, a rotatable shaft l-ocated at v the conveyor and elevate it to the discharge the pick-up end of said conveyor and projecting outwardly beyond opposite sides thereof, a plurality of digging elements and corresponding Vradially disposed arms carried at yopposite ends of said shaft, said digging elements being adapted to impart for- Wardly andupwardly directed impacts to the material, rotatable screw-like ribbons secured to the outer ends of said arms and having partsadapted to operate upon the material previously acted upon by said digging element-s, said screw-like ribbons being oppositely pitched for moving the material acted upon by thedigging elements towards and into the path of the conveyor buckets, and a common attaching means for securing to said shaft each saiddigging element and its corresponding arm.

In testimony whereof, I have aiiixed my signature to this specification.

RAYMOND o. HAIss. 

